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Topic: VOIP calls drop (Read 1622 times)

I have add a VOIP phone inside the office connected to a local VOIP trunk provider.I can make call and I can receive call.But the problem is that ANY call (IN/OUT) is dropping automatically after 30seconds.

I googled and found that it may be problem on the firewall.I'm not so IT expert so I don't know where I should put my hands to correct it.

Is there anybody with same situation can guide me ?Appreciate and thanks in advance for your time and help

You need to make a firewall rule on your WAN to allow your providers SIP server to your ATA.

Generally source (SIP Provider IP) port 5060(- 5061) (or whatever they use) Destination (your ata LAN address or range if you have more than one) Port 5060-5061 (if those are the ports you use.)

RTP (or the actual voice streams) can be a different beast. Depending on the ata they could be 5004-5059, 16384-16482 ect.. Firewall logs are your friend. Watch them as you try to make and receive calls.

See in attachment.To be sure, I haven't limited the SOURCE IP to my VOIP TRUNK provider (to avoid unpleasant surprise of my lines to be used by others) so it was for test open to ANY SOURCE.

No way. It automatically drop after 30 seconds.I'm testing just ONE SIP phone (alcatel Temporis Ip200) but it happen with other 2 SIP phone (grand stream GXP2020) etc.

Now.... don't misunderstand me here.When I was using M0N0wall, I have just the same setup as above.No QoS nothing else.Indeed M0n0 was just handling ADSL connection (PPPoE) and internal VOIP phone.I remember I did setup the m0n0 and I did as same as for OPNsense.

I googled a lot and it seems the problems is with FIREWALL configuration (nothing to do with FIREWALL NAT/rules).

And about the log.... I don't see anything strange on the NORMAL view or DYNAMIC view FIREWALL log.Unless you may guide me on how to read it (again as I said yesterday I'm in learning phase).